Hi Theworldisyours

Welcome to NeuroTalk . I hope that you will find the community both knowledgeable and supportive.

I am sorry to read about your peripheral neuropathy.

PN is listed as a "rare" side-effect of Flagyl and its only reported interaction with a recreational drug is a "Major" one with alcohol.

The information here may help you with this.

Flagyl Uses, Dosage & Side Effects - Drugs.com

Best wishes.